Floatting point operation

Ruby
1

Hi

i need to do operation in ruby with 36 bit float exactly.

is there a class who can do it?

Can we modify constant parameter of class float(DIG,MANT_DIG) ?

thank you

2

Mat Pfa wrote in post #1164106:

i need to do operation in ruby with 36 bit float exactly.

is there a class who can do it?

You can use BigDecimal:

irb(main):001:0> x = BigDecimal(“1”) / 3
=> #<BigDecimal:6006d8048,‘0.3333333333 33333333E0’,18(36)>
irb(main):002:0> puts x
0.333333333333333333E0
=> nil
irb(main):003:0> sprintf("%.36f", x)
=> “0.333333333333333314829616256247390993”
irb(main):004:0> sprintf("%.36f", x).length
=> 38

Can we modify constant parameter of class float(DIG,MANT_DIG) ?

What do you mean by that?

Cheers

robert